Answer key will be provided on May 24, 2020. Thank you.
Geology of the Philippines
The Philippines: A Complex Plate Boundary
Set E
1. This is an elongated bathymetric depression that reaches depths of
5,100 m in the latitude of Manila.
a. Manila Trench
b. Cotabato Trench
c. Philippine Trench
d. Negros Trench
2. It represents an active orogenic belt resulting from the collision
of the western edge of the Philippine Sea Plate and the continental margin of
Eurasia.
a. Taiwan
b. Mindoro-Panay
c. Moluccas Sea
d. Palawan Microcontinental Block
3. This lithologic unit in the Philippines can be divided into two
categories of, (1) pre-Cretaceous of continental origin and, (2) Cretaceous of
insular arc affinity.
a. Metamorphic rocks
b. Ophiolites and ophiolitic rocks
c. Magmatic rocks and active volcanic arcs
d. Sedimentary basins
4. The origins and mode of emplacement of these rocks are still the
subject of controversy.
a. Metamorphic rocks
b. Ophiolites and ophiolitic rocks
c. Magmatic rocks and active volcanic arcs
d. Sedimentary basins
5. It represents the morphological expression of the subduction of the
oceanic crust of the South China Sea under the Luzon Arc.
a. Manila Trench
b. Cotabato Trench
c. Philippine Trench
d. Negros Trench
6. A structure that plays significant role in the Neogene tectonic
evolution of the Philippine Archipelago.
a. Philippine Mobile Belt
b. Philippine Fault
c. Philippine Trench
d. East Luzon Trough
7. A well-developed accretionary prism exists for this east-dipping
subduction zone.
a. Manila Trench
b. Cotabato Trench
c. Philippine Trench
d. Negros Trench
8. Characterized by the transformation of the subduction of the South
China Sea Plate under the Luzon Arc.
a. Taiwan
b. Mindoro-Panay
c. Moluccas Sea
d. Palawan Microcontinental Block
9. The age of the rocks belonging to this metamorphic group does not
extend beyond Paleogene.
a. pre-Cretaceous metamorphic rocks of continental origin
b. Cretaceous metamorphic rocks of insular arc affinity
10. The corresponding volcanic arc of this structure does not exist.
a. Manila Trench
b. Cotabato Trench
c. Philippine Trench
d. East Luzon Trough
Answer key is here. I advise that you check it out after finishing all sets.
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